To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments. You are given the results below. TreatmentObservationA20302533B22262028C40302822 Note: rearrange this to (columns) in excel: A B C20 22 4030 26 3025 20 2833 28 22The null hypothesis is to be tested at the 1% level of significance. The critical value from the table is  Group of answer choices16.694.268.0299.39

To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments. You are given the results below. TreatmentObservationA20302533B22262028C40302822 Note: rearrange this to (columns) in excel: A B C20 22 4030 26 3025 20 2833 28 22The mean square between treatments (MSTR) equals Group of answer choices5.861.8723634

o test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments. You are given the results below. TreatmentObservationA20302533B22262028C40302822 Note: rearrange this to (columns) in excel: A B C20 22 4030 26 3025 20 2833 28 22The null hypothesis is to be tested at the 1% level of significance. The null hypothesis Group of answer choicesshould be revisedNo answer text provided.should not be rejectedshould be rejected

You obtained a significant test statistic when comparing three treatments in ANOVA. What is the conclusion?

A cosmetic company wanted to demonstrate the benefit of using their skincare for dark skin treatments. A sample of six was obtained, and each participant used it for 30 days. After 30 days, the scores were as follows:ParticipantBefore treatmentAfter treatment117222161931921415175121861318Is there any significant difference after 30 days? Use α = 0.05.a.Use paired t-test and there is a difference after 30 days of treatment.b.Use ANOVA test and there is a difference after 30 days of treatment.c.Use Z-test and there is a difference after 30 days of treatment.d.Use 2-sample t-test and there is a difference after 30 days of treatment.

The effectiveness of the drugs is measured by two response variables x1 and x2, reported in Table 1. Testthe hypothesis that the means of all the treatments are equal. Is the effectiveness of the drug given to thethird treatment group significantly different from the effectiveness of the drug given to to fourth treatmentgroup?1